I read about atomic cross chain trading a while ago, and I'm really surprised how little people have been talking about it, given its huge potential.

I’m building a peer-to-peer altcoin exchange based on atomic cross-chain trading, which should make altcoin exchanges almost completely irrelevant in the near future =)

Also, there will be a small amount of altcoins/ bitcoin sent to developers’ address, so it could be quite profitable at higher volumes. The idea is that people will stay because of network effects, development of the software, and adding new altcoins to the exchange.